He's a major investor in my company, and can 100% attest that's true. What's most astonishing about him is how responsive he is even two years after making that investment. He must have so many companies and he's still always showing up and encouraging and providing value. He's pretty direct when he thinks we are doing the wrong things, but that's always appreciated. His super power is handling all that over email (mostly).
I second that sentiment. I was in business with Cuban for many years, he always responded quickly and could always be reached via email / messaging in a matter of minutes in most cases if something came up. An almost ideal investor for an entrepreneur and his terms are very unusual in the industry, he often takes common shares with no strings, he's on the same playing field as the founders.
